80551380 has 96 divisors (see below), whose sum is σ = 277611264. Its totient is φ = 16994304.

The previous prime is 80551379. The next prime is 80551399. The reversal of 80551380 is 8315508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1917 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (2891784).

Almost surely, 2^80551380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80551380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138805632).

80551380 is an abundant number, since it is smaller than the sum of its proper divisors (197059884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80551380 is a wasteful number, since it uses less digits than its factorization.

80551380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14785 (or 14783 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 80551380 is about 8975.0420611828. The cubic root of 80551380 is about 431.8745992332.

Adding to 80551380 its reverse (8315508), we get a palindrome (88866888).

The spelling of 80551380 in words is "eighty million, five hundred fifty-one thousand, three hundred eighty".